OzVMX Forum

Marque Remarks => Honda => Topic started by: xrBarf on January 17, 2013, 06:58:21 pm

Title: cr125m barrels
Post by: xrBarf on January 17, 2013, 06:58:21 pm

Need some help... Would a 76 barrel bolt up to a 74 bottom end ?   Regards Les

Title: Re: cr125m barrels
Post by: JohnnyO on January 17, 2013, 08:03:21 pm

Les from memory they do but only if you machine out the 74 cases because the 76-78 cylinder has a thicker liner or another way of doing it is to machine the lower part of the liner thinner where it protrudes below the base gasket surface.

Title: Re: cr125m barrels
Post by: xrBarf on January 17, 2013, 08:14:56 pm

Thanks for that info John. I knew there was something that would have to be done. Have fun in Taree... Regards Les

Title: Re: cr125m barrels
Post by: JohnnyO on January 17, 2013, 08:21:11 pm

Thanks Les looks like being a great weekend as long as the rain holds off..

Title: Re: cr125m barrels
Post by: motomaniac on January 17, 2013, 08:39:15 pm

what you doing Barf? Folks usually do it the other way around,74 topend on 76 lower.

Title: Re: cr125m barrels
Post by: xrBarf on January 17, 2013, 09:52:14 pm

Brent I destroyed barrel at Boagys last year and just looking for options with parts to fix her up again... Regards Les

Title: Re: cr125m barrels
Post by: John Orchard on January 17, 2013, 10:06:02 pm

Quote from: xrBarf on January 17, 2013, 09:52:14 pm

Brent I destroyed barrel at Boagys last year and just looking for options with parts to fix her up again... Regards Les

That's because the RM's at the track spook'd it  ;-)

Title: Re: cr125m barrels
Post by: xrBarf on January 17, 2013, 10:20:55 pm

Now Now Johnny boy ,blew up in practice on its time out in years. To me the piston has the tell tale signs of the gudgeon pin pushing the circlip out. There is a ridge inside piston where the circlip sits but half way out to edge of piston. It's just a pity I have no more room in barrel for another re bore...Regards Les

Title: Re: cr125m barrels
Post by: bigk on January 18, 2013, 09:15:41 am

I have 74, 75 & 76 cylinders if you need one.
K